The online ads sound alluring: Come to the sunny south of China and forget the smog of Beijing, they say. Enjoy the laid-back lifestyle; abandon unhealthy Beijing! As Beijing residents endured heavy smog on Tuesday, the last day of a four-day red alert for hazardous air pollution, companies in southern China have been advertising the attractions of their sun-filled, tree-lined cities, all in a bid to lure smart, educated and ambitious employees from the north. Amy Li, a human resources adviser at Umeox , a technology company in Shenzhen that makes smartwatches, said the clean air at the technology park where her firm is was a big bonus in her recruiting drive. “You’ll never need to wear a mask here,” Ms. Li said. “Our […]